Safety razor



Oct. 18, 1932. L. v. ARoNsoN 1,883,324

A SAFETY RAZOR Filed Dec. 27, 1930 2 sheets-sheet 1 i@ wi W 30 f5 az m K 55 if J h "jm- S14/vanto@ 34 37 vwl? Krozzsozz Oct. 18, 1932. v. ARoNsoN 1,883,324

SAFETY RAZOR Filed Dec. 27, 1930 2 Sheets-Sheet 2 .provide a safety razor havin Patented Oct. 18, 1,932l

UNITED STATES PATENT oFFicE LOUIS V. ARONSON, OF NEWARK, NEW JERSEY SAFETY RAZOR I Application led December 97, 1930. Serial No. 505,123.

member hereinafter referred to as a hone, F

comprising a plate bearin the ard to coact with the blade in shavigng ugpbn an edge thereof. v

It is a further object of the invention to a combined one and guard plate with mec anical means to move the plate Ainto Vposition. for sharpening the blade and from such position to the position wherein the guard coacts with the blade for the urpose of sliavi It is a. urt er object of the invention to provide a safety razor having means to preserve the proper relation between the guard and blade during' shaving and to allow ot tilting oi' the hone while the blade is being sharpened to ensure Contact of the edge of the blade throughout its entire length with 'the surface of the hone.

It is a further object of the invention to provide a safety razor having meansv to support a flexible blade tirmiy upon both surfaces and to rigidly clamp the blade adjacent the edge between such holding means.

It is a further object of the invention to provide a safety razor having means to rigidly clamp upon both surfaces razor blades of widely varyin character.

It is a urt er object of the invention to provide a safety razor having a movable combined hone and guard plate with means to positively prevent movement of theplate from shaving position to sharpening position while the device is in use for shaving.

It is a further object of the invention to provide a safety razor havin a combined lione and guard plate which. 1s readily removed from the'structure for cleaning.

Further objects of the invention Will appear from the followingdescription when read in connection with-the accompanying drawings showing an illustrative embodiment of the invention and wherein Fig. 1 is a side elevation;

Fig. 2 is a like view from the o posite side with the parts opened and the bladje removed;

Fig. 3 is a plan view; Fi 4 is a vertical section on line 4 4 of Fi 1; ,I5 ig. 5 is a vertical section on line 5-5 of i Fig. 6 is a plan view with the clamping plate removed;

Fig. 7 is s. plan view with the entire blade eo holding assembly removed; and

Fig. 8 is a plan view with the hone and guard plate removed and with the sharpening motion producing mechanism in the position which it occupies while the razor is being I6 used for shaving.

As shown the device comprises a :trame iate 10 rigidly mounted upon handle inemers ll, l2. To ivotally support a. biade lioiding assembly t e frame'plate l@ is shown ya as formed with u standing ears i8, li; between which is rigidly mounted a bar held .between said ears by means ot screws ie, u'.

To support a blade, a base plated@ oarryte; ing blade positioning studs 19, is rotatably mounted upon the bar 15, the piate havin downturned ears 2l, 22 which, are periiorate to engage the bar l5 for the purgose. Eo clam a thin binde 23 upon the ase plate i8, t ere is shown a. oap member 2d having `downturned ears 25, 26 ivoted upon projecting portions 27., 28 carried by the base plate 18. To cause the cap plate to clamp the blade against the base late, a` latch member Q9 ie @l shown as ivoted) at 30 upon the cap plate, which late as shown is in the form of a bell cranlr having the finger engaging portion 3l and the latch pro]ection 32 engaging a peripheral slot 33 1n the projecting end l of stud 20. positive clamping action of the latch is provided by virtue or a o am A surface 34 carried by the edge of projection 1 32 which squeezes into the s ot 33 applying pressure upon'the ed 35 of the cap plate I6 against the blade adjacent its edge, which pressure is reacted against by the extreme 'edge of the base plate 18.

The cap late 24 is shown as arched between its ges to ensure that the pressure shall be applied closely adjacent the edge of the blade as described.

lTo sharpen the edge of the blade and to provide a guard for coaction with the edge of the blade in shaving, acombined hone and guard plate 36 is shown the plate bein provided with guard teeth 37 on its'forwa-r edge. To cause a la ping or oscillatory movement of the hone w en used to sharpen the blade, there is shown a drive shaft 38 housed in a tubular member 39, the drive shaft carrying a disc 40 upon its upper end, which disc is provided with a crank pin 41 loosely engaging a rforation 42 in the hone plate.

To m ify the motion of the hone plate imparted thereto b the crank pin 41 upon revolution of the s aft 38 b force applied to the knurled extremity 43 t ereof, the` hone plate is rearwardly extended and slotted as at 44, which slot engages a guide stud 45. By combined action of the crank pin 41 and the guide 45, the hone will be driven in such manner that all active points in its surface in contact with the edge ofthe blade will move in ellipses and since the major axes of these ellipses will be out of perpendicular to the ed of the blade, the motion of the hone will predominantly parallel with the edge of the b ade, thus tending to effectively 'eent formation of a wire edge upon the To move the guard and hone late from shaving to sharpenin position, t e tube 39 in which the drive s aft 38 is journaled is shown as carrying mounted thereon a Aplate 46 formed with a slot 47 coactin with a crank pin 48. carried by disc 49 riven by e a shaft 50 journaled in the handlemember 12 and driven by a knurledhead 51 which :may be manipulated by the thumb and finger of the user.

The slot 47 is shown as terminatingdownwardly closely adjacent the axis of the shaft 50, the result being that when the knurled v'head 51 is turned to project the hone and guard plate to the position shown in Fig. 5, the pin 48 will strike the bottom of the slot, thus limiting the outward movement of the hone plate.

During revolution .of the knurled head 51,

the tubular member 39, carrying with it the drive shaft 38, revolves about the common axis of cap screws52 andk about hollow inlternally screwthreaded bosses 53 carried by perforated disc 54. An end of the tube 39 engages in a counter-sink in the member 54 andthe shaft 38 passes through the same.

To positively limit the rearward movement of the hone plate 36, the rear corners 55 thereof engage in stop members 56 formed upon forward projecting portions of ears 13, 14. Since the crank pin 41 cannot be revolved without producing a lateral oscillation of the hone plate, it is impossible to revolve `tion 50 is the blade upon the be readily lifted o riad by the shaft 38 when the corners of the hone plate engage the said stops 56. l

l To assist in preventing rotation of the pin, 41 while the hone plate is in shaving position as well as to center said pin in its retracted position, the forward portion of raised porformed with a recess 62 in the path of movement of crank pin 41 when the plate is moved to shaving position. The sides of this recess are forme to cam the pinto the central rear position if not accurately so positioned when the hone plate is moved backwardly and to prevent' an movement of rotation of the crank pin w en fully seated in the recess.

To cause an even one during the sharpening operation, thehone is shown as supported solely at a position belowrthe center of the blade as by means of a stud 57, the hone being ca able of rocking laterally about this stud if trhe edge of the blade ltends to press unevenly thereupon, 4the rearwardly projecting ortion of the hone plate being also centra ly sup orted by means of the raised portion 58 o the frame plate 10.

To provide for an even relation of the edge of the blade to the guard while shaving, the base plate 18 is provided with a pair of studs 59, one adjacent each outer corner thereof, as clearly indicated in Fig. 6, which studs bear upon the hone and guard plate in the rear of the guards when the hone plate is retracted to bring the guard into action.

When the blade is 4clamped in the blade supporting assembly, pressure upon the rearwardly projecting ortion 31 of the latch will elevate the b ade lholding assembly about the bar 15 and with the hone late projected to theposition of Fi 5 an the shaft` 38 revolved for greatest orward projecton of the hone late, the hone plate may E from the crank pin 42 and slipped out of the device for cleaning and may be as readily returned.

To cause pressure of the edge Aof the blade against the ard in shaving and against the hone in s arpening, the bar 15 is shown as provided with a projecting stud 60 coacting with the sprin member 61 rigidly carthe plate 1g. f l

When the blade holding assembly is tilted to the position of Fig. 2, the spring 61 moves about the end oft-he stud to a position where it will hold the blade holding assembly in the elevated position shown in Fig. 2.

The operation of the device will be clear from the foregoing description and-it will ybe seen that an exceedingly eilicient sharpening position is given the hone, that the number of the parts 1s reduced to its lowest terms, that widelyl varying forms of thin flexible blades now on the market may be utilized in the device, and that each of Asaid formsof blade will be rigidly clamped adjacent its Eressurevof the edge of Y said blade and hone with the shaving edge to carry out the process of shava veryv eliicient sharpening movement is given the hone and that the blade is rigidly carried in its correct relation of angularity to the surface of the hone While being sharpened.

The hone plate 36 may be formed of a wide range of materials, it being understood that the term hone is used in the foregoing description and in the following claims in the sense of anyy razor sharpening material suitable for this use including metals, glass, fine gritted stone, leather, or the like.

Minor changes may be made in the physical embodiment of the invention within scope ot the appended claims without de parting "from the spirit thereof.

il claim:

l. A safety razorcomprising, in combination, a support, a blade mounted thereon, a hone plate having a plane honing surface and movably mounted on said support, guard teeth carried by an edge of said plate, means to move said plate from shaving to honing position andV drive means carried by said support to cause relative movement between latterv in honing position.

,Y f1. A safety razor comprising, in combination, a support, a blade mounted thereon, a hone plate having a plane honing surface and movably mounted on said support, guard teeth carried by an edge of said plate, means to move said plate from shaving to honing position, drive means carried by' said support to cause relative movement between said blade and hone with the latter in honing position, means to prevent such relative movement Iwhile said plate is in shaving position and means to maintain said plate in honing position during said 'relative movement. i

3. A safety razor comprising, in combination av support, a blade mounted thereon, a hone plate movably mounted on said support, guard teeth carried by an edge of said plate, means to move said plate from shav ing to honing position, said means constructed and arranged to maintain said plate in shaving and honing positions respectively when moved thereto, drive means carried by said support to cause relative movement between said blade and plate While the latter is in honing position and means to positively prevent such movement while the plate is in shaving position. f

4. A safety razor comprising, in combination, a' support, a blade mounted thereon, a combined hone and guard plate movably mounted on said support, means to move said plate between fixed limits to shaving and honing positions and means carried by said support to cause relative movement between said blade and plate while the latter is remg in the most eiiicient manner. Also that' tion, a hollow handle,

tained at the honing limit of movement to honin position.

5. i safety razor comprising, in combination, a handle, a frame plate fixed thereon, a drive shaft, a crank pin operated thereby, a hone slidable on said plateand movable by means of said pin, a journal for said shaft, means to pivotally mount saidjournal on said handle for movement in an'axial plane of the shaft, a lever pivoted on the handle to move said journal about its pivot whereby to move said hone between honing and shaving positions and a blade mounted on said plate with its edge in Contact with the hone while in honing position.

ii. A safety razor comprising, in carabination., a support, a hone plate moi/'ably mounted thereon, guard teeth carried by edge ot' said plate, a blade mounted in the support with its edge in position adjacent said guard and a path ot movement oit said hone, means to drive said hone to sharpen the blade, actuating means for said drive means, a movable mounting for said actuating means and means to move said mounting to shift said hone between shaving` and honing positions.

7. A safety razor comprising, in combination, a support including a plate having an opening with a recess in one side thereof, a crank shaft mounted on said support in a journal movable between honingl and shaving positions, a crank pin driven by said shaft to revolve in said opening, a hone slidable on said plate and having an opening engaging said pin, guard teeth carried by said hone, a blade mounted on said plate with its edge in position to coact with said guard teeth when said journal is in shaving position and to Contact said hone in honing position of said journal, said pin entering said recess to prevent movement of the pin when revolved to position of greatest retraction of the hone and the journal is in shaving position.

ica

Miti

8. A safet razor com risin in comhinay p if,

tion, a support comprising a handle and a plate secured substantially perpendicularly thereto at an end thereof, an elongated journal pivoted to said handle adjacent its end remote from said plate, a shai't jonrnaled upon said handle adjacent said plate, a eranlr pin driven by said shaft and engaging a slot formed in a wall of thereof whereby movement of said crank os,- cillates said journal about its pivot, a drive shaft mounted in said journal, a crank pin carried by said drive shaft, a hone plate slidable on said plate and having an opening engaged over said last named pin, a blade mounted on said plate, the edge of the blade contacting the hone in one position of said first named crank pin.

9. A safety razor comprising, in combinaa frame plate mounted said journal axially at an end thereof, a drive shaft extendin within the handle, a journal for said sha pivotally mounted in said handle remote from sald plate, on an axis perpendicular to the axis of said shaft, finger engageable means carried by said shaft adjacent said pivot for drive thereof, a combined hone and guard plate slidably mounted on said plate, blade su port means mounted on said frame plate to iiold a blade to coact with said guard and hone res c'tively, means to cause honing movement o said combined plate when said shaft is revolved and means to move said shaft and Lcombined plate between shaving and honing positions with movement of the shaft journal about its pivot.

10. A safety razor comprising, in combination, a frame, a combined hone and uard plate slidably mountedth'ereon, a blade older mounted on ,said frame above said plate, said plate movable between honing and shaving positions, resilient meansactlng on said holder to press the edge of ablade carried thereby toward said plate and means carried by the holder contacting said plate when in shaving position to position the edge of the blade relative to the guard.

l1. A safety razor comprising, in combination, a frame, a combined hone and guard carrying platey slidably mounted thereon, means to move said plate between honing and shaving positions, means tocause honing movement of the plate while in honing position, a blade mounted on said frame to eoact with said guard in shaving and Yto contact said hone when in honing position and means carried b the frame to contact the rear ed e of said p ate in shaving position to align t e guard and blade edge. 5

12. A safety razor comprising, in combination, a frame, a combined hone and guard carrying plate slidably mounted thereon, means to move said plate between honing and shaving positions, means to cause honing movement of the plate while in honing position, a blade mounted on said4 frame to coact with said guard in shaving and to contact said hone when in honingrposition and means rigidly carried by the ame overlying the rear edge of the plate in 'shaving position to prevent separatlon of the plate from the frame.

13. A safety razor comprising, in combination, a frame, a combined hone and guard carrying plate slidably mounted thereon,

' means to move said plate between honing and shaving positions, means to cause honing movement of the plate while in honing position, a blade mounted on said frame to coact with said guard in shaving and to conl tact said hone when in honing position and a flange carried by said frame at eheh side of the center thereof` and standing in the rear of the rear edge of the hone plate, said 4Aflanges formed with forwardly open recesses providing portions overlapping the rear edge of the late in shavin position and said rear edge t en abutting t e vertical portions of the y 14. A safety razor comprising, in combination, a. frame having an o ning formed with a recess, a shaft journale on said. frame movable between honing and shaving ositions, a crank pin driven by said sha to revolve in said opening when the shaft is in honin position and entering said recess when said s aft is in shaving osition to be locked from rotation, a hone p ate having an o ening engaged by said crank pin, and a b ade mounted on saidframe in shaving position and to be sharpened by said hone when the latter is in honing position.

15. The combination in a safety razor, of a pivotally lmounted inner clamping plate, an outer clamping plate, a. stud supported in one of saidl plates and projecting through a hole in the other plate, said stud being provided with a flange at its free end, a lever provided .with a wedge-shaped end engageable under said flange and pivotallylsupported on said other plate, and an ioperating arm on ,said lever rojecting beyond the edges of said plates or operating rsaid lever to secure said plates together and to rock said plates about the pivotal support.

In testimony whereof I hereunto set my hand.

vLOUIS V. ARONSON. 

